Efeito da temperatura na germina̧ão de sementes de Sebastiania commersoniana (Baillon) Smith & Downs separadas pela colora̧ão do tegumento

Detalhes bibliográficos
Autor(a) principal: Santos, Sérgio Roberto Garcia dos
Data de Publicação: 2005
Outros Autores: Aguiar, Ivor Bergemann de [UNESP]
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://www.ipef.br/publicacoes/scientia/nr69/cap06.pdf
http://hdl.handle.net/11449/68656
Resumo: Sebastiania commersoniana (Euphorbiaceae) is a tree species of riparian forests in Brazil. Seeds of this species released from mature fruits have heteromorphy in coat colour: dark (dark-brown to black), striated (dark with light-grey stria) and clear (light-grey to whitish). In this work two experiments were carried out in order to study the effect of temperature on seed germination in interaction with coat colour. Germination final percentage and speed index were evaluated. In the first experiment seeds of the three colours were submitted to constant (30°C) and alternating (20-35°C) temperatures. For all the seed colours, best results were obtained at alternating temperature. Physiological quality of striated seeds was greater than those clear seeds and dark seeds were intermediate. In the second experiment striated and clear seeds were submitted to three amplitudes of alternating temperature: 5°C (20-25°C and 25-30°C), 10°C (20-30°C and 25-35°C) and 15°C (20-35°C). Both germination percentage and speed were higher in striated seeds and for the two seed colours, best results were obtained at 20-30°C and 20-35°C. These temperatures are recommended for the germination test.
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spelling Efeito da temperatura na germina̧ão de sementes de Sebastiania commersoniana (Baillon) Smith & Downs separadas pela colora̧ão do tegumentoEffect of temperature on Sebastiania commersoniana (Baillon) Smith & Downs seed germination separated by coat colourCoat colourForest seedGerminationPhysiological qualitySebastiania commersonianaTemperatureCoat colorBiodiversityForestrySeedForestsSeedsSebastiania commersoniana (Euphorbiaceae) is a tree species of riparian forests in Brazil. Seeds of this species released from mature fruits have heteromorphy in coat colour: dark (dark-brown to black), striated (dark with light-grey stria) and clear (light-grey to whitish). In this work two experiments were carried out in order to study the effect of temperature on seed germination in interaction with coat colour. Germination final percentage and speed index were evaluated. In the first experiment seeds of the three colours were submitted to constant (30°C) and alternating (20-35°C) temperatures. For all the seed colours, best results were obtained at alternating temperature. Physiological quality of striated seeds was greater than those clear seeds and dark seeds were intermediate. In the second experiment striated and clear seeds were submitted to three amplitudes of alternating temperature: 5°C (20-25°C and 25-30°C), 10°C (20-30°C and 25-35°C) and 15°C (20-35°C). Both germination percentage and speed were higher in striated seeds and for the two seed colours, best results were obtained at 20-30°C and 20-35°C. These temperatures are recommended for the germination test.Sȩão de Silvicultura Institute Florestal Estado de São Paulo, Caixa Postal 1322, São Paulo, SP - 01059-970Departamento de Produ̧ão Vegetal Faculdade de Ciências Agrárias e Veterinárias UNESP, Prof. Paulo Donato Castellane s/n, Jaboticabal, SP -14884-900Departamento de Produ̧ão Vegetal Faculdade de Ciências Agrárias e Veterinárias UNESP, Prof. Paulo Donato Castellane s/n, Jaboticabal, SP -14884-900Universidade Estadual Paulista (Unesp)Santos, Sérgio Roberto Garcia dosAguiar, Ivor Bergemann de [UNESP]2014-05-27T11:21:45Z2014-05-27T11:21:45Z2005-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article77-83application/pdfhttp://www.ipef.br/publicacoes/scientia/nr69/cap06.pdfScientia Forestalis/Forest Sciences, n. 69, p. 77-83, 2005.1413-9324http://hdl.handle.net/11449/686562-s2.0-336456938702-s2.0-33645693870.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporScientia Forestalis/Forest Sciences0.5000,495info:eu-repo/semantics/openAccess2023-11-25T06:19:26Zoai:repositorio.unesp.br:11449/68656Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-11-25T06:19:26Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Efeito da temperatura na germina̧ão de sementes de Sebastiania commersoniana (Baillon) Smith & Downs separadas pela colora̧ão do tegumento
Effect of temperature on Sebastiania commersoniana (Baillon) Smith & Downs seed germination separated by coat colour
title Efeito da temperatura na germina̧ão de sementes de Sebastiania commersoniana (Baillon) Smith & Downs separadas pela colora̧ão do tegumento
spellingShingle Efeito da temperatura na germina̧ão de sementes de Sebastiania commersoniana (Baillon) Smith & Downs separadas pela colora̧ão do tegumento
Santos, Sérgio Roberto Garcia dos
Coat colour
Forest seed
Germination
Physiological quality
Sebastiania commersoniana
Temperature
Coat color
Biodiversity
Forestry
Seed
Forests
Seeds
title_short Efeito da temperatura na germina̧ão de sementes de Sebastiania commersoniana (Baillon) Smith & Downs separadas pela colora̧ão do tegumento
title_full Efeito da temperatura na germina̧ão de sementes de Sebastiania commersoniana (Baillon) Smith & Downs separadas pela colora̧ão do tegumento
title_fullStr Efeito da temperatura na germina̧ão de sementes de Sebastiania commersoniana (Baillon) Smith & Downs separadas pela colora̧ão do tegumento
title_full_unstemmed Efeito da temperatura na germina̧ão de sementes de Sebastiania commersoniana (Baillon) Smith & Downs separadas pela colora̧ão do tegumento
title_sort Efeito da temperatura na germina̧ão de sementes de Sebastiania commersoniana (Baillon) Smith & Downs separadas pela colora̧ão do tegumento
author Santos, Sérgio Roberto Garcia dos
author_facet Santos, Sérgio Roberto Garcia dos
Aguiar, Ivor Bergemann de [UNESP]
author_role author
author2 Aguiar, Ivor Bergemann de [UNESP]
author2_role author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Santos, Sérgio Roberto Garcia dos
Aguiar, Ivor Bergemann de [UNESP]
dc.subject.por.fl_str_mv Coat colour
Forest seed
Germination
Physiological quality
Sebastiania commersoniana
Temperature
Coat color
Biodiversity
Forestry
Seed
Forests
Seeds
topic Coat colour
Forest seed
Germination
Physiological quality
Sebastiania commersoniana
Temperature
Coat color
Biodiversity
Forestry
Seed
Forests
Seeds
description Sebastiania commersoniana (Euphorbiaceae) is a tree species of riparian forests in Brazil. Seeds of this species released from mature fruits have heteromorphy in coat colour: dark (dark-brown to black), striated (dark with light-grey stria) and clear (light-grey to whitish). In this work two experiments were carried out in order to study the effect of temperature on seed germination in interaction with coat colour. Germination final percentage and speed index were evaluated. In the first experiment seeds of the three colours were submitted to constant (30°C) and alternating (20-35°C) temperatures. For all the seed colours, best results were obtained at alternating temperature. Physiological quality of striated seeds was greater than those clear seeds and dark seeds were intermediate. In the second experiment striated and clear seeds were submitted to three amplitudes of alternating temperature: 5°C (20-25°C and 25-30°C), 10°C (20-30°C and 25-35°C) and 15°C (20-35°C). Both germination percentage and speed were higher in striated seeds and for the two seed colours, best results were obtained at 20-30°C and 20-35°C. These temperatures are recommended for the germination test.
publishDate 2005
dc.date.none.fl_str_mv 2005-12-01
2014-05-27T11:21:45Z
2014-05-27T11:21:45Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.ipef.br/publicacoes/scientia/nr69/cap06.pdf
Scientia Forestalis/Forest Sciences, n. 69, p. 77-83, 2005.
1413-9324
http://hdl.handle.net/11449/68656
2-s2.0-33645693870
2-s2.0-33645693870.pdf
url http://www.ipef.br/publicacoes/scientia/nr69/cap06.pdf
http://hdl.handle.net/11449/68656
identifier_str_mv Scientia Forestalis/Forest Sciences, n. 69, p. 77-83, 2005.
1413-9324
2-s2.0-33645693870
2-s2.0-33645693870.pdf
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv Scientia Forestalis/Forest Sciences
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0,495
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 77-83
application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
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